The full output is much longer and if you look through the entire list of commands there are ~40 of them. It’s tough to navigate that list because those commands are associated to containers, images, networks, volumes and so on.

Docker realized that is not sustainable in the long term, so they added “Management Commands” which help categorize all of the commands and also make the commands themselves more consistent.

For example docker container ls is the new way to do docker ps. Sure it’s more typing, but it’s a lot more clear on what it does. Likewise, now you can run docker image ls, docker network ls or docker volume ls. There’s consistency across all of these commands.

Both versions of the commands do the same thing. I imagine long term, the non-grouped up commands (such as docker run) will be deprecated in favor of docker container run. There’s no sign of this happening soon, but if you use Docker 1.13+ then you should try to use the newer syntax. It’s both more descriptive and consistent.